ASTM :D 4779 - 93 , () , , 1 D 4779; , , , , - . . (e) , .1. 1.1 (), () (IC) , , , , . 50 1000 .1.2 , .1.3 , , . , .2. , :2.1 ASTM:D 1129 , 2D 1192 3D 1193 , 2D 2777 , D-19 2D 3370 23. 3.1 - , , D 1129.3.2 , :3.2.1 (IC) - , .3.2.2 (; ) - .3.2.3 () - .4. 4.1 , (K2S2O8), (Na2S2O8). , () . , , , 2, -1 D-19 ASTM , D19.11 , . 15 1993 . 1993 . D 4779 - 88. D 4779 - 88.2 Annual Book of ASTM Standards, Vol. 11.01., , , 2 . , , , . , ( ). 2, , , , , .4.2 “ ” “ ”.5. 5.1
